Some of the Analytical tools to check out the competition and get more insights in your chosen Domain are:
www.opensiteexplorer.org: Open Site Explorer is Moz’s Search Engine for Links. Perform competitive link research, explore backlinks, anchor text, and more for free.
www.alexa.com :Alexa provides analytical insights to benchmark, compare and optimize businesses on the web.
Website Grader: Marketing Grader (formerly Website Grader) is a free tool that measures & analyzes all of your marketing efforts & gives actionable advice on how to improve. https://website.grader.com
SimilarWeb:- It is an Advanced Competitive Intelligence Tool that help you to Compare Website Traffic with SimilarWeb.com and get other important insights like traffic source, other similar site etc
SocialBakers : Socialbakers is the most popular provider of social media analytic tools, statistics and metrics for Facebook, Twitter, Google Plus, YouTube and LinkedIn. They provide Data-driven insights from social media for better content, advertising, customer care and audience engagement across all digital channels. http://www.socialbakers.com/
Serpstat – One of the best tool to check from which keyword your competitor is getting traffic. https://serpstat.com
Buzzsumo – Analyze what content performs best for any topic or competitor. http://buzzsumo.com
Semrush – Again a very popular SEO tool but a Paid one, prices start at $69.95. https://www.semrush.com